Respuesta :

Step-by-step explanation:

a) [tex]x^2 - 5x + 4 = (x - 1)(x - 4)[/tex]

b) [tex]x^2 - 10x + 9 = (x - 1)(x - 9)[/tex]

c) [tex]x^2 - 16x + 64 = (x - 8)^2[/tex]